CS4237B datasheet(6/114 Pages) CIRRUS

Part #	CS4237B

Description	CrystalClear Advanced Audio System with 3D Sound

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Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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DIGITAL CHARACTERISTICS (TA = 25°C; VA, VDF1-VDF4 = 5V, VD1 = 5V/3V;

AGND, DGND1, SGND1-SGND4 = 0V.)

Parameter

Symbol

Min

Max

Units

High-level Input Voltage

Digital Inputs

XTALI

VIH

2.0

VD-1.0

-

V

Low-level Input Voltage

VIL

-0.8

V

High-level Output Voltage:

ISA Bus Pins (except DRQA)

I0 = -24.0 mA

DRQA

I0 = -24.0 mA

IOCHRDY, SDA/XD0 (Note 6)

All Others

I0 = -1.0 mA

VOH

2.4

VD1

VDF

V

Low-level Output Voltage:

ISA Bus Pins

I0 = 24.0 mA

I0 = 18.0 mA

IOCHRDY

I0 = 8.0 mA

All Others

I0 = 4.0 mA

VOL

-

0.55

0.4

V

Input Leakage Current

(Digital Inputs)

-10

10

µA

Output Leakage Current

(High-Z Digital Outputs)

-10

10

µA

Note

6. Open Collector pins. High level output voltage dependent on external pull up (required) used and

number of peripherals (gates) attached.

DIGITAL FILTER CHARACTERISTICS (Note 1)

Parameter

Symbol

Min

Typ

Max

Units

Passband

0

-

0.40xFs

Hz

Frequency Response

-1.0

-

+0.5

dB

Passband Ripple

(0-0.40xFs)

-

±0.1

dB

Transition Band

0.40xFs

-

0.60xFs

Hz

Stop Band

0.60xFs

-

Hz

Stop Band Rejection

74

-

dB

Group Delay

8- and 16-bit formats

Stereo ADPCM format

Mono ADPCM format

-

10/Fs

14/Fs

18/Fs

s

Group Delay Variation vs. Frequency

ADCs

DACs

-

0.0

0.1/Fs

µs

DS213PP4

CS4237B

6

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